This 20 oz stainless steel tumbler features #304 food grade stainless steel construction, vacuum insulation and copper plated inner wall. It keeps drinks hot for up to 8 hours or cold for up to 16 hours. The cup has an acrylic top lid with a sliding sipper. It also has a beveled design to allow it to fit the average cup holder for on the go use. Not recommended for dishwasher use, hand wash only. Quantity ordered must be in increments of 12 pcs per color